<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
  <title>css的编写方式</title>
  <link rel="stylesheet" href="3.css"/>
  <style type="text/css">
	div{	/*内部样式*/
		background-color:yellow;
		color: green !important;
	} 
	h2{
		margin: 0;
	}
  </style>
 </head>

 <body>
	<h2>CSS样式</h2>
	<!--内联样式-->
	<div style="color:red">此处是一片新闻</div>
	<hr/>
	<div>123</div>
 </body>
</html>
